Wash. Rev. Code § 36.61.280
(2) Plans for the control and removal of aquatic plants or vegetation must, to the greatest extent possible, meet the following requirements:
(c) Minimize adverse impacts to:
(4) The control or removal of native aquatic plants or vegetation shall be authorized in the following areas:
(b) Beaches or nearshore areas in a city that meets the following:
[ 2008 c 301 s 2.]